While _______ out of the window, I saw my father walking Wap版

试题详情及答案解析

While _______ out of the window, I saw my father walking the dog in the garden.

A．look	B．looking
C．looked	D．having looked

答案：B

试题分析：考查动词时态辨析。句意：当我从窗户向外看时，我看见我爸爸在花园遛狗。句子完整的是 While I was looking out ┄.表示动作正在进行。故选 B
考点：考查动词时态辨析。